alarm clock

US 
UK 
  • n.闹钟
  • Web闹铃时钟;响闹式时钟;闹钟功能
Plural Form:alarm clocks  
alarm clock
n.
1.
闹钟a clock that you can set to ring a bell, etc. at a particular time and wake you up
I set the alarm clock for 7 o'clock.
我把闹钟定在 7 点钟闹响。

Sample Sentence

Definition:
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